CA2941249C - Driving circuit for a conductivity sensor - Google Patents
Driving circuit for a conductivity sensor Download PDFInfo
- Publication number
- CA2941249C CA2941249C CA2941249A CA2941249A CA2941249C CA 2941249 C CA2941249 C CA 2941249C CA 2941249 A CA2941249 A CA 2941249A CA 2941249 A CA2941249 A CA 2941249A CA 2941249 C CA2941249 C CA 2941249C
- Authority
- CA
- Canada
- Prior art keywords
- driving circuit
- differential amplifier
- bridge
- sensor
- inputs
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000012530 fluid Substances 0.000 claims abstract description 21
- 238000005070 sampling Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 10
- 238000004891 communication Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/06—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a liquid
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/045—Circuits
Landscapes
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Biochemistry (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Measurement Of Resistance Or Impedance (AREA)
- Analogue/Digital Conversion (AREA)
- Electronic Switches (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201461954134P | 2014-03-17 | 2014-03-17 | |
| US61/954,134 | 2014-03-17 | ||
| PCT/US2015/020742 WO2015142728A1 (en) | 2014-03-17 | 2015-03-16 | Driving circuit for a conductivity sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2941249A1 CA2941249A1 (en) | 2015-09-24 |
| CA2941249C true CA2941249C (en) | 2018-06-19 |
Family
ID=52814203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2941249A Active CA2941249C (en) | 2014-03-17 | 2015-03-16 | Driving circuit for a conductivity sensor |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US9500614B2 (ja) |
| JP (1) | JP6312918B2 (ja) |
| KR (1) | KR101943637B1 (ja) |
| CA (1) | CA2941249C (ja) |
| DE (1) | DE112015001279T5 (ja) |
| GB (1) | GB2538924B (ja) |
| WO (1) | WO2015142728A1 (ja) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3039436A4 (en) * | 2013-12-31 | 2017-04-19 | Halliburton Energy Services, Inc. | Method for multiplexing wheatstone bridge measurements |
| US10352887B1 (en) * | 2016-06-22 | 2019-07-16 | Ronald W. Parker | Conductivity measurement methods and systesms |
| JP6401811B2 (ja) * | 2017-03-15 | 2018-10-10 | Ｋｙｂ株式会社 | 流体性状検出装置 |
| CA3113665A1 (en) | 2018-09-21 | 2020-03-26 | Teralytic Inc. | Extensible, multimodal sensor fusion platform for remote, proximal terrain sensing |
| JP7382862B2 (ja) | 2020-03-13 | 2023-11-17 | 株式会社平和 | 遊技機 |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS596782U (ja) * | 1982-07-07 | 1984-01-17 | 横河電機株式会社 | 導電率計 |
| CA1227247A (en) * | 1985-02-05 | 1987-09-22 | Thomas M. Dauphinee | Liquid conductivity measuring circuit |
| JPH0755744A (ja) * | 1993-08-19 | 1995-03-03 | Mitsubishi Rayon Co Ltd | 導電率測定方法及び装置 |
| EP0736969A1 (en) * | 1995-03-28 | 1996-10-09 | Texas Instruments Incorporated | Differential voltage amplifier |
| US6438497B1 (en) * | 1998-12-11 | 2002-08-20 | Symyx Technologies | Method for conducting sensor array-based rapid materials characterization |
| JP3692391B2 (ja) * | 1999-04-16 | 2005-09-07 | 矢崎総業株式会社 | 電源供給制御装置および電源供給制御方法 |
| US6781389B1 (en) * | 2001-10-12 | 2004-08-24 | Ford Global Technologies, Llc | Conductivity sensor for detecting conductivity of a fluid |
| JP4543888B2 (ja) * | 2004-11-11 | 2010-09-15 | 日本精工株式会社 | 電動パワーステアリング装置 |
| CN100541208C (zh) * | 2006-08-30 | 2009-09-16 | 梅特勒-托利多仪器（上海）有限公司 | 溶液电导率的测量方法 |
| JP5158067B2 (ja) * | 2009-12-22 | 2013-03-06 | 株式会社デンソー | 液体用濃度測定装置 |
| WO2011116211A2 (en) * | 2010-03-17 | 2011-09-22 | University Of South Alabama | Salinity sensor for embedded environmental monitoring |
| KR101741083B1 (ko) * | 2010-06-24 | 2017-05-29 | 삼성전자주식회사 | 염도 측정 장치 |
| JP5559675B2 (ja) * | 2010-12-28 | 2014-07-23 | パナソニック株式会社 | アクチュエータ駆動装置 |
| US20130234705A1 (en) * | 2012-03-08 | 2013-09-12 | Schlumberger Technology Corporation | Method and system for applying nmr pulse sequences using different frequencies |
-
2015
- 2015-03-16 DE DE112015001279.6T patent/DE112015001279T5/de not_active Ceased
- 2015-03-16 CA CA2941249A patent/CA2941249C/en active Active
- 2015-03-16 GB GB1617239.7A patent/GB2538924B/en active Active
- 2015-03-16 KR KR1020167028652A patent/KR101943637B1/ko active IP Right Grant
- 2015-03-16 JP JP2017501070A patent/JP6312918B2/ja active Active
- 2015-03-16 WO PCT/US2015/020742 patent/WO2015142728A1/en active Application Filing
- 2015-03-17 US US14/659,845 patent/US9500614B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| US20150260671A1 (en) | 2015-09-17 |
| JP6312918B2 (ja) | 2018-04-18 |
| WO2015142728A1 (en) | 2015-09-24 |
| CA2941249A1 (en) | 2015-09-24 |
| US9500614B2 (en) | 2016-11-22 |
| DE112015001279T5 (de) | 2017-02-16 |
| KR20160138126A (ko) | 2016-12-02 |
| GB201617239D0 (en) | 2016-11-23 |
| GB2538924A (en) | 2016-11-30 |
| KR101943637B1 (ko) | 2019-01-29 |
| GB2538924B (en) | 2020-12-02 |
| JP2017513022A (ja) | 2017-05-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2941249C (en) | Driving circuit for a conductivity sensor | |
| CA2954901C (en) | Electrochemical sensing module | |
| CN203241165U (zh) | 一种基于三线制的热电阻测温电路 | |
| US20170059628A1 (en) | Power detection apparatus | |
| CN202329866U (zh) | 荧光光纤温度传感解调仪 | |
| CN202648827U (zh) | 测温电路、温度采集系统、变频器及温度变送器 | |
| CN110609072A (zh) | 一种普鲁士蓝膜生物电极的微弱信号检测电路 | |
| US8786296B2 (en) | Resistance-measuring circuit and electronic device using the same | |
| CN116643080B (zh) | 一种脉冲式直流电流采样测量装置 | |
| CN107003268A (zh) | 与传感器一起使用的控制电路以及包括该控制电路的测量系统 | |
| CN103453951A (zh) | 电磁流量计信号同步采样方法及装置 | |
| CN201311330Y (zh) | Pt100测温电路 | |
| CN216349199U (zh) | 一种智能温度变送器和传感器信号测量装置 | |
| CN112229457B (zh) | 一种新型电磁流量计及其测量方法 | |
| CN204228286U (zh) | 一种水分仪用温度采集电路 | |
| JP2014021090A (ja) | 電流検出回路及び電流検出回路を用いた超音波診断装置 | |
| CN202049129U (zh) | 阻抗式含水率计校准装置 | |
| CN204142837U (zh) | 便携式在线电阻导率检测仪 | |
| CN215297228U (zh) | 一种基于恒电压的臭氧数字传感器 | |
| CN116298491B (zh) | 应用于显示屏背光电流检测的脉冲式直流电流测量方法 | |
| CN210294377U (zh) | 微小反向电流的测量电路 | |
| CN211697756U (zh) | Tds检测仪 | |
| CN106197729B (zh) | 高精度温度变送器 | |
| CN105444822A (zh) | 具有调幅式管路液体导电度测量功能的电磁式流量计 | |
| CN201628547U (zh) | 电子水平测量仪 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |
Effective date: 20160830 |